public MainWindowViewModel()
{
server = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(
RegisteredTfsConnections.GetProjectCollections().First().Uri);
workItemStore = (WorkItemStore)server.GetService(typeof(WorkItemStore));
versionControl = server.GetService<VersionControlServer>();
buildServer = (IBuildServer)server.GetService(typeof(IBuildServer));
historyLoader = new HistoryLoader(versionControl);
loadHistoryCommand = new DelegateCommand(LoadHistory);
}
private void Button_Click(object sender, RoutedEventArgs e)
{
HistoryLoader history = new HistoryLoader();
DateTime currentDate = DateTime.Today;
var hs = history.LoadHistory(_security.secId, currentDate.AddDays(-60).ToString("yyyy-MM-dd").Replace('.', '-'), currentDate.ToString("yyyy-MM-dd").Replace('.', '-'));
var prices = hs.Select(p => (float)p.close).ToArray();
var ml = new MLContext();
var dataView = ml.Data.LoadFromEnumerable(hs);
var inputColumnName = "floatClose";
var outputColumnName = nameof(ForecastResult.Forecast);
var model = ml.Forecasting.ForecastBySsa(outputColumnName, inputColumnName, 10, 20, prices.Length, 5);
var transformer = model.Fit(dataView);
var forecastEngine = transformer.CreateTimeSeriesEngine <History, ForecastResult>(ml);
var forecast = forecastEngine.Predict();
//последняя точка основного графика:
var lastHistoryPoint = new DateModel {
DateTime = currentDate = DateTime.Parse(hs.Last().tradeDate), Value = hs.Last().floatClose
};
Dispatcher.Invoke(() =>
{
List <DateModel> predictedPrices = new List <DateModel>();
predictedPrices.Add(lastHistoryPoint);
for (int i = 0; i < forecast.Forecast.Length; ++i)
{
DateModel dm = new DateModel {
DateTime = currentDate.AddDays(i + 1), Value = forecast.Forecast[i]
};
predictedPrices.Add(dm);
}
var forecastSeries = new LineSeries
{
Title = "Прогноз",
LineSmoothness = 0,
PointGeometrySize = 3,
PointForeground = Brushes.Red,
};
forecastSeries.Values = new ChartValues <DateModel>(predictedPrices);
SeriesCollection.Add(forecastSeries);
});
}
void LoadHistory()
{
HistoryLoader history = new HistoryLoader();
var hs = history.LoadHistory(_security.secId, DateTime.Today.AddDays(-60).ToString("yyyy-MM-dd").Replace('.', '-'), DateTime.Today.ToString("yyyy-MM-dd").Replace('.', '-'));
var prices = hs.Select(s => new DateModel
{
DateTime = DateTime.ParseExact(s.tradeDate, "yyyy-MM-dd", CultureInfo.InvariantCulture),
Value = s.close
}).ToArray();
Dispatcher.Invoke(() =>
{
var series = new LineSeries
{
Title = "Цена",
LineSmoothness = 0,
PointGeometrySize = 3,
PointForeground = Brushes.Gray
};
series.Values = new ChartValues <DateModel>(prices);
SeriesCollection.Add(series);
});
}
